Tracheae emerging from wing veins from The unusual tracheal system within the wing membrane of a dragonfly Rhainer Guillermo-Ferreira Esther Appel Paulina Urban Pitágoras C. Bispo Stanislav N. Gorb 10.6084/m9.figshare.4960244.v1 https://rs.figshare.com/articles/figure/Tracheae_emerging_from_wing_veins_from_The_unusual_tracheal_system_within_the_wing_membrane_of_a_dragonfly/4960244 Light microscopy and TEM images of tracheae emerging from wing veins and branching inside the wing membrane 2017-05-02 13:03:17 odonata morphology evolution wing microscopy ultrastructure